Blue supergiants as descendants of magnetic main sequence stars
Blue supergiants as descendants of magnetic main sequence stars
复制标题
蓝超巨星是磁性主序星的后代
DOI:
10.1051/0004-6361/201526302
复制
发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Fossati L
中科院分区:
文献类型:
--
作者:
Petermann I;Langer N;Castro N;Fossati L
About 10% of the massive main sequence stars have recently been found to host a strong, large scale magnetic field. Both, the origin and the evolutionary consequences of these fields are largely unknown. We argue that these fields may be sufficiently strong in the deep interior of the stars to suppress convection near the outer edge of their convective core. We performed parametrised stellar evolution calculations and assumed a reduced size of the convective core for stars in the mass range 16M⊙to 28M⊙from the zero age main sequence until core carbon depletion. We find that such models avoid the coolest part of the main sequence band, which is usually filled by evolutionary models that include convective core overshooting. Furthermore, our “magnetic” models populate the blue supergiant region during core helium burning, i.e., the post-main sequence gap left by ordinary single star models, and some of them end their life in a position near that of the progenitor of Supernova 1987A in the Hertzsprung-Russell diagram. Further effects include a strongly reduced luminosity during the red supergiant stage, and downward shift of the limiting initial mass for white dwarf and neutron star formation.
登录
查看更多内容
影响因子:
6.5
作者:
S. Dorch
通讯作者:
S. Dorch
影响因子:
6.5
作者:
Brott, I.;Evans, C. J.;Anders, P.
通讯作者:
Anders, P.
影响因子:
6.5
作者:
J. Vink;I. Brott;G. Gräfener;N. Langer;A. D. Koter;A. D. Koter;D. Lennon
通讯作者:
D. Lennon
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
L. Fossati;N. Castro;T. Morel;N. Langer;M. Briquet;T. Carroll;S. Hubrig;M. Nieva;L. Oskinova;N. Przybilla;F. Schneider;M. Schöller;S. Simón;I. Ilyin;A. D. Koter;A. Reisenegger;H. Sana
通讯作者:
H. Sana
DOI:
--
发表时间:
1965
期刊:
影响因子:
--
作者:
D. Gough;J. Ostriker;R. Stobie
通讯作者:
R. Stobie